Oracle-L: Re: trouble importing

From: <Jared.Still_at_radisys.com>
Date: Thu, 16 May 2002 10:22:39 -0800
Message-ID: <F001.00462A50.20020516102239@fatcity.com>

Bill,

If the tables already exist, drop all indexes, FK and PK constraints. They will
be re-created by the import and this will greatly speed things up.

Try setting an obscenely large SORT_AREA_SIZE before running the import to speed up index creation. ( Like 50 - 100 meg )

Don't forget to set it back after the import. This is of course requires bouncing
the database twice.

Use COMMIT=Y and BUFFER=10485760

Buffers larger than 10 meg have not shown a corresponding increase in speed,
at least in my experience.

HTH, Jared

"Magaliff, Bill" <Bill.Magaliff_at_lendware.com> Sent by: root_at_fatcity.com
05/16/2002 09:08 AM
Please respond to ORACLE-L

        To:     Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
        cc: 
        Subject:        trouble importing

I have a 17Gb db that I need to import (Sun 880 running Solaris 5.8).

the largest tables (of which there are several) are in the 1-3Million row range . . . a few contain longs. so far it's been running about 24 hours and is only half-way done.

have 500Mb shared pool and 350Mb db buffer cache - one large rbs (100Mb extents), COMMIT=N set on import.

any ideas how to speed this up?

thx
--

Please see the official ORACLE-L FAQ: http://www.orafaq.com
--

Author: Magaliff, Bill
INET: Bill.Magaliff_at_lendware.com

Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051
San Diego, California        -- Public Internet access / Mailing Lists
--------------------------------------------------------------------

To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).

--

Please see the official ORACLE-L FAQ: http://www.orafaq.com
--

Author:
INET: Jared.Still_at_radisys.com

Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051
San Diego, California        -- Public Internet access / Mailing Lists
--------------------------------------------------------------------